diff --git a/core/modules/help_topics/tests/src/Kernel/HelpTopicKernelTest.php b/core/modules/help_topics/tests/src/Kernel/HtmlChunkerTest.php
similarity index 77%
rename from core/modules/help_topics/tests/src/Kernel/HelpTopicKernelTest.php
rename to core/modules/help_topics/tests/src/Kernel/HtmlChunkerTest.php
index 3fd40653ce..4ab215aa7d 100644
--- a/core/modules/help_topics/tests/src/Kernel/HelpTopicKernelTest.php
+++ b/core/modules/help_topics/tests/src/Kernel/HtmlChunkerTest.php
@@ -2,42 +2,20 @@
 
 namespace Drupal\Tests\help_topics\Kernel;
 
-use Drupal\Component\Utility\Html;
-use Drupal\Core\Serialization\Yaml;
 use Drupal\KernelTests\KernelTestBase;
 use Drupal\help_topics\HtmlChunker;
 
 /**
- * Tests some core functionality of the Help Topic entity.
+ * Tests the Drupal\help_topics\HtmlChunker class.
  *
  * @group help
  */
-class HelpTopicKernelTest extends KernelTestBase {
+class HtmlChunkerTest extends KernelTestBase {
 
   /**
-   * Modules to enable.
-   *
-   * @var array
+   * Tests the HTML chunking functions.
    */
-  public static $modules = [
-    'system',
-    'help_topics',
-    'help',
-    'filter',
-  ];
-
-  /**
-   * {@inheritdoc}
-   */
-  protected function setUp() {
-    parent::setUp();
-    $this->installConfig(['help_topics']);
-  }
-
-  /**
-   * Tests the help topic body get and set functions.
-   */
-  public function testTopicBodyGetSet() {
+  public function testHtmlChunkJoin() {
     // Create a body value with lots of different HTML tags, some entities, and
     // some whitespace of various types between tags, and some text between
     // tags.
@@ -63,7 +41,6 @@ public function testTopicBodyGetSet() {
     // Make sure that if we strip out tags, all remaining text is in the 'text'
     // parts of the chunked body array.
     $body_plain = strip_tags($body_expected);
-    $body_chunked = HtmlChunker::chunkHtml($body);
     $chunked_text = '';
     foreach ($body_chunked as $item) {
       $prefix = strip_tags($item['prefix_tags']);